Design of a molecular memory element with an alternating circular array of dipolar rotors and rotation suppressors |
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| Authors: | Takuya Miyazaki Yoshiaki Shoji Fumitaka Ishiwari Takashi Kajitani Takanori Fukushima |
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| Institution: | Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8503 Japan.; RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148 Japan ; Materials Analysis Division, Open Facility Center, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 Japan ; Japan Science and Technology Agency (JST), CREST, 4-1-8 Hon-cho, Kawaguchi Saitama 332-0012 Japan |
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| Abstract: | As a new element for electric-field driven molecular memory, we developed a hexaarylbenzene derivative in which three difluorophenyl groups and three aryl groups as a dipolar rotor and a rotation suppressor, respectively, are alternately positioned on the central benzene core. This molecule has two rotational isomeric forms, both of which preserve their conformational states at room temperature but exhibit interconversion at high temperatures. Amorphous thin films fabricated from the hexaarylbenzene show a reversible change in surface potential by application of electric fields.A hexaarylbenzene derivative with an alternating circular array of dipolar rotors and rotation suppressors holds promise as a new element for electric-field driven molecular memory. |
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